help please identify the part in this phot.

[Andy Wylie]

http://www.lightningjar.com/mopar/ says it's a 55 8 cyl LH quarter panel moulding

[jerrybev]

someone said it was 55 belvedere but I cant see that part on any picture of a 55 belvedere.  However I am confident it is a forward look part.
thanks for your help. It is part #1593435, andmeasures 16.25"x 1.5".
thanks for your time and help
jerry whitfield in North Carolina